Here's another perspective. From 1902 until the late 40's with the advent of the NBA, the Red Sox were the only game in town and it's what your grandfathers and fathers lived and most likely, died for/with. The Celtics were THE franchise in the late 50's until the 80's but still were outdrawn by the Bruins.
The Red Sox for all their current success trace it back to 1967. Prior to that, they were doormats who didn't draw fans. When Yaz and Lonborg turned around a team, they had a region fall in love with them, despite all the game 7 failings that followed. To this day 40 plus years later, the Sox have been in the hearts of New Englanders, not just Bostonians.
The Patriots pre-Kraft and pretty much until 2001, were the Red Sox pre-1967 with some success but not at the level of today. Since 2001, it's been a perfect storm of success for both the Red Sox and Patriots. I hope that forty years out, New Englanders will look at 2001 the way Red Sox fans look at 1967,as the start of a great run........
Just my $0.02,